Well I get the v730 in the morning. Looked super clean. Clean filter , clean oil. 4 year old rebuild. Got a manual on the way from eBay. Hoping I'm not missing parts , adapters, etc for the swap. My existing VH uses the old spicer 4 shifter to select f/n/r. Don't know if I can adapt that to the v730

Switching from a 6V-71 to a 6V-92TA is a virtually identical switch-both engines are identical on the outside. Just have to plumb up the turbo on the 6V-92 and install a larger radiator. But then you'll have 50% more torque with the 6V-92TA. Don't waste your time with the 6V-71. Good Luck, TomC

I have to agree with the others - don't waste the time, money and effort to put the V-730 behind the 6V71.

Unless, of course, you only want to drive around town like a transit bus.

Wrap up the 730 and put it in a corner of your garage until you can find a nice LH 6V92TA, THEN do the swap.

In the meantime, do some detective work to find out what rear axle ratio you've got in your coach. You may have to do an axle swap as part of the powertrain change out. Best is a 4.125:1, acceptable are 4.375:1 or 4.56:1.